Sheet-metal-seaming machine



'J'. w. BROWN AND w. Hiss. SHEET METAL SEAIVIING MACHINE. l I APPLICATION FILED IULYIO. i918. RENEWED MAR.'22, I92l.` 1,381,062,

APaten'teja-June 7, 1921.

2 SHEETS-SHEET l J. W. BROWN AND W. HESS. SHEAET METAL SEAMING MACHINE. APPLICATION man JuLYlo. 191B. RENEwED MAR.22.1*921.

1,381,062. Patented June 7, 1921.

2 SHEETS-SHEET 2- jig-fun{` L f f! IvenTor 2 Winess: f. l' Jan G5/014W j BYh/f//lam Heiss His ATorneT.'

JOHN w. BROWN AND WILLIAM nnss, or PHILADELPHIA, riiNivs'YLvAiIA,` Y

AssIeNons, BY Dinner AND MESNE ASSIGNMENTS, To BENJAIv/r'iil' I. f OBDYKE, I Nc., or rIIILAnELrIIIA, PENNSYLVANIA, A CORPORATION or DELAWARE.

SHEET-METAL-SEAMING MACHINE.

Leonesa.

T o all whom t may concern.'

Be it known that we, JOHN YV. BnowN and WILLIAM Hass, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful VImprovements in Sheet-Metal-Seaniing Machines; and we de hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it ap ertains to make and use the same.

' This invention relates to improvements in seaming machines for forming locked Joints on sheet tin or other like sheet material,

The object in view is the rapid, efficient and inexpensive completion of aninterlocking seam formed of the overlapping edge portions of two sheets, the entire operation being automatic with the exception of the actual feeding' ofthe sheets of material.

With this and further objects in view, as will in part hereinafter. become apparent and in part be stated, the invention'comprises certain novel constructions, combinations and arrangements of parts as subsequently specified and claimed.

In the accompanying drawings,.- Figure 1 is a view in front elevation of a machine embodying the features of the present invention. Y

Fig. 2 is a view in side elevation thereof, parts being broken away.

Fig. 3 is a transverse section taken on the plane indicated by line 3-3 of Fig.V 1, the parts being in the position assumed when the sheets are first located for the beginning of an operation.

Figs. 4, 5, 6 and 7 are views similar to Fig. 3, showing the successive steps of the operation of completing a seam and leaving the sheets in the final position of the machine free for removal from the machine.

Fig. 8 is a horizontal section taken on the plane indicated by line 8-8 of Fig. 3 and looking downward.'

In the accompanying drawings, 1 indicates a supporting framework in which are journaled the operating shafts carrying the actuating gear and connected with the operating cams hereinafter described. Forming a part of the framing 1 is the horizontal table 2 having a longitudinal slot or Opening in which is arranged the plunger 3,

Specification of Letters Patent. LPgiggnted Jun@ 7, 1921.

Application led July 10, 1918, Serial No. 244,202. Renewed Mareh'22, 1921. Serial NO.'454,418Q

said plunger being guided by the walls ofV the slot and being actuated' byv a cam 4, ixed'to a shaft 5 in the framing 1. and carrying'an operating gear 6 meshing ywith a gear 7which latter gear .is mounted on the drive shaft 8. Driveshaft 8 is provided with the usual tight and loose pulleys and supplied with power through a belt 9. Of

course, the power suppliedy to shaft'8 mayl be otherwise delivered.

Above the table 2 are arranged the 'latein ally-reciprocating tuckers 10'which are slidingly mounted between the side plates of. the framing 1. Each tucker 10 is guided at its inner p ortion by endwise extending pins 11 projecting into guiding slots 12 formed in the side plates of the framing 1. Simi-fV lar pins 13V extend endwise from the Outer portion of each` tucker 10, and each extends Y through the respective slot 12 and into the cam groove 11i formed in the face of an actuating gear 15 meshing with a gear 16 fixed to the drive shaft 8. There are. thus four gears 15, two ateach side of the machine, arrangedin pairs, and the gears of each pair are connected and supported by a shaft 15( which isjournaled in' the side plates of framing 1. i

Above theY table 2,v and'k extending lengthwise thereof substantially in line with the plunger 3, isa plunger 17, which, because of its functions, we preferably designate as a hammer. At each side of this hammer is arranged a folder 18, each slidingly mounted between the hammer and a guide plate 19 forming part of the framework 1. The folders 18 may be operated by independent cams, but as their movement is identical, it is preferable to actuate them from a single cam, and, therefore, the folders are connected at their ends.

24 journaled in the framing 1. The gears 23 mesh with gears 16. Thehammer 8. is provided with connecting rods 26 engaging cams 27 of the gear wheels 23.

rEhe operation consists in introducing a sheet in position lying with its edge portiony extending across the plunger 3 and lacing a second sheet to have its edge portion lap Y One of theYV Y folders is provided with a connecting rod 20 the first sheet, as indicated in Fig. 3. Then the folders 18 move down to the. position indicatedrin Fig. 4L, and the plunger 3 immediately thereafter moves up to the position indicated inFig. 4, so that the lapping portions of the sheets are caused to assume an inverted trough-like shape. The folders then move upward and the plunger 3 moves downward. Thenthe tuckers l0 move inward to the positionindicated in Fig. 5 for drawing the sheets toward each other and producing an underhanging of the vertical walls of the trouglrshaped portion. The tuckers 10 then move outward and the hammer -17 descends upon the upstanding portion 'of the sheets and crushes them to the position indicatedin Fig. 6. Then the han mer moves upward and the parts assume the position indicated inF ig. 7. The `parts remain inthis position until the sheets are slid out from beneath the operating parts and are ready for a second operation.

It is, of course, obvious that where a series Of sheets are "to be connected, one edge of `a sheet is seamed to` an edge of another sheet, and then the two` sheets are moved along the table until the second edge of the first-mentioned sheet is located over the plunger 3, and a new sheet ispositioned for being seamed thereto, vand so on until a strip of tin orother sheetl material is pro-A duced of any required length.

What we claim is :4- Y `l. In sheet metal seaming machines, the combination with a frame havinga slotted Asupporting table, of aplunger reciprocallymounted in the slot and adapted to have itsupper end move upward beyond the plane of the table and tombe sustained in the elevated position in timed relation to movements of other parts, reciprocating folders movably mounted at opposite sides of the plunger when elevated, laterally-disposed tuelrers arranged when elevated in the planes of the lower ends of the foldersjwhen elevated, and means for moving the 'tuclers laterally inward toward each other and simultaneously moving the inner portions of tuclrers arranged when elevated in the planes of the lower ends'of the folders when elevated, the tuckers being movable laterally inward toward each other and downward substantially to the plane of the table when the plunger and folders are withdrawn, the

frame being formed with guiding slots, guiding pins extending from the tuckers into. the slots for guiding the tuckers in their inward and downward movement, and means for thus reciprocating the tuckers.l

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN w.V BROWN. WILLIAM rin-ss.

. Witnesses Y Gno. W. PARSONS, EDWARD BoNsALL. 

